gemstone
Jadeite Jade
NaAlSi2O6 (Sodium Aluminum Silicate)
Hardness: 6.5-7 on Mohs scale; Color: Pale to emerald green, white, lavender; Luster: Vitreous to greasy; Crystal Structure: Monoclinic (microcrystalline granular aggregates); Specific Gravity: 3.25-3.35
- Hardness
- 6
- Color
- Pale to emerald green, white, lavender
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 6.5-7 on Mohs scale; Color: Pale to emerald green, white, lavender; Luster: Vitreous to greasy; Crystal Structure: Monoclinic (microcrystalline granular aggregates); Specific Gravity: 3.25-3.35
Formation & geological history
Formed under high-pressure, low-temperature metamorphic conditions in subduction zones, typically within serpentinite mélanges.
Uses & applications
Carved into ornaments, jewelry, statues, and amulets like the traditional Chinese cicada pendant shown.
Geological facts
In Chinese culture, the jade cicada symbolizes rebirth, immortality, and protection, and was historically placed on the tongue of the deceased during burial.
Field identification & locations
Identified by its toughness, fibrous or granular texture, and cool touch; primarily sourced from Myanmar (Burma), Guatemala, and Russia.
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